
" ============================ specific file type ===========================

autocmd FileType python set tabstop=4 shiftwidth=4 expandtab ai
autocmd FileType ruby set tabstop=2 shiftwidth=2 softtabstop=2 expandtab ai
autocmd BufRead,BufNew *.md,*.mkd,*.markdown  set filetype=markdown.mkd

autocmd BufNewFile *.sh,*.py exec ":call AutoSetFileHead()"
function! AutoSetFileHead()
    " .sh
    if &filetype == 'sh'
        call setline(1, "\#!/bin/bash")
    endif

    " python
    if &filetype == 'python'
        call setline(1, "\#!/usr/bin/env python")
        call append(1, "\# encoding: utf-8")
    endif

    normal G
    normal o
    normal o
endfunc

autocmd FileType c,cpp,java,go,php,javascript,puppet,python,rust,twig,xml,yml,perl autocmd BufWritePre <buffer> :call <SID>StripTrailingWhitespaces()
fun! <SID>StripTrailingWhitespaces()
    let l = line(".")
    let c = col(".")
    %s/\s\+$//e
    call cursor(l, c)
endfun

" ============================ key map ============================

nnoremap k gk
nnoremap gk k
nnoremap j gj
nnoremap gj j

map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l

nnoremap <F2> :set nu! nu?<CR>
nnoremap <F3> :set list! list?<CR>
nnoremap <F4> :set wrap! wrap?<CR>
set pastetoggle=<F5>            "    when in insert mode, press <F5> to go to
                                "    paste mode, where you can paste mass data
                                "    that won't be autoindented
au InsertLeave * set nopaste
nnoremap <F6> :exec exists('syntax_on') ? 'syn off' : 'syn on'<CR>

" kj 替换 Esc
inoremap kj <Esc>

" Quickly close the current window
nnoremap <leader>q :q<CR>
" Quickly save the current file
nnoremap <leader>w :w<CR>

" select all
map <Leader>sa ggVG"

" remap U to <C-r> for easier redo
nnoremap U <C-r>

" Swap implementations of ` and ' jump to markers
" By default, ' jumps to the marked line, ` jumps to the marked line and
" column, so swap them
nnoremap ' `
nnoremap ` '

" switch # *
" nnoremap # *
" nnoremap * #

"Keep search pattern at the center of the screen."
nnoremap <silent> n nzz
nnoremap <silent> N Nzz
nnoremap <silent> * *zz
nnoremap <silent> # #zz
nnoremap <silent> g* g*zz

" remove highlight
noremap <silent><leader>/ :nohls<CR>

"Reselect visual block after indent/outdent.调整缩进后自动选中，方便再次操作
vnoremap < <gv
vnoremap > >gv

" y$ -> Y Make Y behave like other capitals
map Y y$

"Map ; to : and save a million keystrokes
" ex mode commands made easy 用于快速进入命令行
nnoremap ; :

" Shift+H goto head of the line, Shift+L goto end of the line
nnoremap H ^
nnoremap L $

" save
cmap w!! w !sudo tee >/dev/null %

" command mode, ctrl-a to head， ctrl-e to tail
cnoremap <C-j> <t_kd>
cnoremap <C-k> <t_ku>
cnoremap <C-a> <Home>
cnoremap <C-e> <End>
